<?php
	class CostModel
	{
		public const CPM = 0;
		public const CPC = 1;
		public const CPA = 2;
		public const TIME_BASED = 3;
		public const ZERO_COST = 4;
		public const FLAT_FEE = 5;
		//
		public function __construct()
		{
		}
	}
?>